<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org"
        xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity3">
   <head>
           <title>Spring Security Example </title>
       </head>
   <body>
       <div th:if="${param.error}">
               Invalid username and password.
           </div>
       <div th:if="${param.logout}">
               You have been logged out.
           </div>
       <form th:action="@{/doLogin}" method="post">
               <div><label> User Name : <input type="text" name="username"/> </label></div>
               <div><label> Password: <input type="password" name="password"/> </label></div>
               <div><input type="submit" value="Sign In"/></div>
           </form>
   </body>
</html>